Expander device



FIG. 1 is a front left side perspective view of an expander device, showing our new design;

FIG. 2 is a front view of the expander device of FIG. 1, the back view being identical thereto;

FIG. 3 is a left side view of the expander device of FIG. 1, the right side view being identical thereto;

FIG. 4 is a top side view of the expander device of FIG. 1, the bottom side view being identical thereto; and,

FIG. 5 is a front view in use condition, the broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an expander device, as shown and described. 